Riding roller



FIG. 1 is a perspective view of a riding roller incorporating our new design as viewed from above, from in front of, and from the left side of the riding roller;

FIG. 2 is a perspective view of the riding roller of FIG. 1 as viewed from below, from in front of, and from the left side thereof;

FIG. 3 is a front elevation view of the riding roller;

FIG. 4 is a rear elevation view of the riding roller;

FIG. 5 is a left-side elevation view of the riding roller;

FIG. 6 is a right-side elevation view of the riding roller; and,

FIG. 7 is a top plan view of the riding roller. 

The ornamental design for a riding roller, as shown and described. 